Measurement device for measuring a property of a flowing fluid
US9891181B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2015 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Dec 21, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F25/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measurement device, in particular an electromagnetic flow meter, for measuring a flow, of a flowing fluid, comprising a measurement tube having an outer tube and a liner lining an inside of the outer tube, and a measurement structure for measuring a property of a fluid flowing through the lined measurement tube during measurement operation, capable of detecting abrasion of the liner. The liner consists of a thermally insulating material, in particular a rubber or a plastic material, structure are foreseen for measuring a temperature gradient (ΔT) across a measurement tube wall of the measurement tube, when the measurement tube wall is exposed to a temperature difference (ΔTL/A) between an ambient temperature (TA) and a fluid temperature (TL/A) of the fluid, and a detecting structure for detecting abrasion of the liner are foreseen, detecting abrasion in case a deviation between the measured temperature gradient (ΔT) and a predetermined reference temperature gradient (ΔTref(ΔTL/A)) representing a temperature gradient across a measurement tube wall exposed to the same or at least a similar temperature difference (ΔTL/A) of an identical measurement tube comprising an unimpaired line…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.